"Sat, 24 Jan 1970 00:54:33"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700124
Only TIME
00:54:33
General datetime
1970-01-24 00:54:33Z
For Database
1970-01-24 00:54:33
For HTTP1.1
Sat, 24 Jan 1970 00:54:33 GMT